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Questions and Answers
In a nucleophilic substitution reaction, what does the nucleophile donate to the substrate?
In a nucleophilic substitution reaction, what does the nucleophile donate to the substrate?
- A positron
- A hydrogen ion
- An electron pair (correct)
- A proton
Which type of mechanism involves a concerted process in nucleophilic substitution reactions?
Which type of mechanism involves a concerted process in nucleophilic substitution reactions?
- Free radical substitution
- Electrophilic addition
- SN2 (correct)
- SN1
What happens to the bond between the carbon and the leaving group in a nucleophilic substitution reaction?
What happens to the bond between the carbon and the leaving group in a nucleophilic substitution reaction?
- It breaks, giving both electrons to the leaving group (correct)
- It remains unchanged
- It transfers to the nucleophile
- It becomes a double bond
In the stepwise mechanism of nucleophilic substitution reactions, what is the rate-determining step?
In the stepwise mechanism of nucleophilic substitution reactions, what is the rate-determining step?
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Study Notes
Nucleophilic Substitution Reactions
- The nucleophile donates a pair of electrons to the substrate, facilitating the substitution reaction.
- The concerted mechanism, known as S_N2, involves a simultaneous bond-making and bond-breaking process, where the nucleophile attacks the substrate as the leaving group departs.
- In nucleophilic substitution reactions, the bond between the carbon atom and the leaving group is broken concurrently with the formation of a new bond between the carbon and the nucleophile.
- In the stepwise mechanism, known as S_N1, the rate-determining step is the formation of the carbocation intermediate, which occurs after the leaving group's departure.
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Description
Test your understanding of nucleophilic substitution reactions with this quiz. Explore the mechanism involving the donation of electron pairs, bond breaking, and formation of new covalent bonds.
